I filled up just before a hot spell hit. I noticed a little gas wet spot on ground under the petcock which I wrote off to excess pressure from the heat. Some days the spot was there, others not. Two weeks later I finally got the bike out and burned off about a quart. No more wet spot but then now a week or so later of sitting on it's side stand, a new wet spot. Dried out and then a day later again. And it's been cool. Any ideas where to start?

Check the clamps and hoses .. Baby powder the area? ... It'll show damp fairly quick

Update: Using a paper towel I am seeing a gas stain at the seam where the "res/pri/on" plate meets the petcock body.

There was a comment in a recent thread that petcock is not rebuild-able ... Not sure if its both in reference or one/other of them ... 

Bit of a check around might shake the reference loose?

Found an exploded view:

http://gstwins.com/gsboard/index.php?topic=37366.msg420207#msg420207

Looks like there is a O ring around the selector dial

Found the recent thread... http://gstwins.com/gsboard/index.php?topic=65423.msg782946#msg782946

There seems to be a no and a yes and a 'fix' in it though ....

FYI 

Yeah. Napa was less than helpful. I couldn't find flat o-rings anywhere. My issue was with the L-shaped reserve connector. I don't think you'd want to JB Weld the dial lol.

I did learn a bit from that experience, though. Under that plate, if you take the two small screws off, there's a rubber o-ring around the dial itself, then there's a thin plastic washer and a thin metal washer that sit on the dial under the plate. Perhaps one of those is missing?

Quote from: JAS6377 on September 05, 2013, 06:05:54 AM
Yeah. Napa was less than helpful. I couldn't find flat o-rings anywhere. My issue was with the L-shaped reserve connector. I don't think you'd want to JB Weld the dial lol.

I don't think o-rings come flat. Round: and they become flat through years of being compressed.

Intake manifolds are a real hoot: after years of heat and compression, they turn into a flat plastic ring. Very  brittle. I keep extra manifold o-ring gaskets around and replace them on older bikes when the carbs are off. You would never find a flat, plastic o-ring at NAPA.

I couldn't fit a regular round o-ring onto that connector, though. It kept pushing itself back. And there was definitely rubber left on that connector. Perhaps it was just a REALLY small thickness and got flattened by the press fit. Oh well. It's welded now lol.

On my petcock (2004), the dial o-ring is square-ish. It's flat on the bottom, and has two triangles on it that seal it. Like 2 mountains and a valley kind of deal.

Just for a little thread completion and illustrative purposes...



- Bboy

ha ha .. it has a smiley face in it